Home / 15,341.88-21,172.56-8,629.62

Finding the Fourth Proportional to 15,341.88, 21,172.56 and 8,629.62

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Solution

The fourth proportional to 15,341.88, 21,172.56 and 8,629.62 is: 11,909.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,341.88 : 21,172.56 = 8,629.62 : x
  2. Step 2: Convert to fraction form
    15,341.88/21,172.56 = 8,629.62/x
  3. Step 3: Cross multiply
    15,341.88x = 21,172.56 × 8,629.62
  4. Step 4: Simplify right side
    15,341.88x = 182,711,147.23
  5. Step 5: Solve for x
    x = 182,711,147.23/15,341.88
  6. Step 6: Final answer
    x = 11,909.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.